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2003 Ford Mustang GT 4.6L Misfire, no power under load
Posted to Ford Driveability on 4/24/2011 44 Replies

This is an odd one. Master tech looking for suggestions. This engine is breaking down under load, no power, misfiring. I checked all sensors, fuel pressure, fuel quality, timing allignment, checked all grounds, checked compression. I even tried a new PCM. Noth...

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car Vehicle Data

2003 Ford Mustang GT

VIN 1F756K5X53
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire, No Power Under Load
OccursCold, Hot, Under Load, on Accel
Message Closed

car Vehicle Data

2003 Ford Mustang GT

VIN 1F756K5X53
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire, No Power Under Load
OccursCold, Hot, Under Load, on Accel